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Test ID FP5PC Pyridoxal 5-phosphate (CSF)

Method Name


Reporting Name

Pyridoxal 5-phosphate Conc., CSF

Specimen Type


Shipping Instructions

Ship samples frozen on dry ice

Specimen Required

Medical Neurogenetics collection kit (MCL T657) required.



One set of tubes is required per patient.

Total CSF volume required is 4.5 milliliters

Each collection kit contains 5 micro centrifuge tubes.

Tube #3 contains antioxidants necessary to perform this test.



CSF should be collected from the first drop into the tubes in the numbered order.


1)    Fill each tube to the marked line with the required volumes.

       Tube 1: 0.5 mL

       Tube 2: 1.0 mL

       Tube 3: 1.0 mL (contains antioxidants necessary to protect the sample integrity)

       Tube 4: 1.0 mL

       Tube 5: 1.0 mL

-       If sample's not blood contaminated, the tubes should be placed on dry ice at bedside

-       If sample's are blood contaminated, the tubes should immediately be centrifuged (prior to freezing) and the clear CSF transferred to new similarly labeled tubes, then frozen

-       Store samples at -80 until they can be shipped

2)     Complete Medical Neurogenetics, LLC request form.

       Include test required, sample date and date of birth.

3)     Label tubes with patient name and ID number, leaving the tube number viewable.

4)     Place samples inside a specimen transport bag and the Medical Neurogenetics, LLC request form inside the pouch of the transport bag.

5)     Ship samples frozen on dry ice. 

Specimen Stability Information

Specimen Type Temperature Time Special Container

Reference Values

30-80 nmol/L 0 to <3 months

23-65 nmol/L 3 months to <1 years

15-51 nmol/L 1 year to <4 years

10-37 nmol/L 4 years to adult

Day(s) Performed

Monday through Friday

Report Available

10 to 18 days

Performing Laboratory

Medical Neurogenetics, LLC

Test Classification

This test was developed and its performance characteristics determined by Medical Neurogenetics, LCC. It has not been cleared or approved by the U.S. FDA.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
FP5PC Pyridoxal 5-phosphate Conc., CSF Not Provided


Result ID Test Result Name Result LOINC Value
Z4918 Pyridoxal 5-Phosphate Concentration Not Provided
Z4919 Interpretation Not Provided